Blind-fast.



W. H. SWIFT.

BLIND FAST. APPLIUATION FILED NOV. 15,1910.

Patented'J an. 24, 1911.

In A

fik'fi witnesses. c7 Zn/7267113077 WILLIAM H. SWIFT, OF EVERETT, MASSACHUSETTS.

BLIND-FAST.

Specification of Letters Patent.

Application filed November 15, 1910.

Patented Jan. 24, 1911.

Serial No. 592,426.

To all whom it may concern:

Be it known that I, \VILLIAM H. Swir'r, a citizen of the United States, residing at Everett, in the county of Middlesen and State of Massachusetts, have invented new and useful Improvements in Blind-Fasts, of which the following is a specification.

This invention relates to an improvement in blind fasts, the object of the invention being to provide a blind fast which is easily attached to any of the ordinary forms of blinds now in use and which, when so attached, cannot be opened from the outside of the house when the blinds are closed, and furthermore, the object of the invention is to provide a blind fast which can be used on blinds which have the outer faces thereof, whenclosed, flush with the outside of the house, or which can be utilized equally well for blinds which are hung so that when closed the inside face is flush with the outside of the house.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims.

Referring to the drawings: Figure 1 is a front elevation of a portion of a blind with my improved blind fast attached there to, together with a portion of the window stool. Fig. 2 is a sectional elevation taken on line 2-2 of Fig. 1. Fig. 3 is a perspective view of the catch which is attached to the window stool. Fig. 4 is a perspective view of the catch which is attached to the side of the house. Fig. 5 is a plan view of the bolt pin.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 5 is the blind and 6 a bolt which is arranged to slide vertically in a casing 7, said casing being formed in two parts 8 and 9 and preferably cylindrical in form. Said casing 7 is inserted in a hole 10 bored in the bottom of the blind, said hole being of the proper size to have the casing a driving fit therein. A pin 11 is fastened to the bolt 6 and projects laterally therefrom through a slot 12 in the side 9 of the casing and also through a slot 13 in the inner side of the blind. The pin 11 is grooved on opposite sides thereof at 14, 14 to engage opposite sides of the narrow portion of the slot 12. The upper portion of the slot 12 is made as large as the diameter of the pin 11, so that when the bolt 6 is moved upwardly in the casing from, the position illustrated in Fig. 2 until the pin 11 alines with the enlarged portion of the slot 12, said pin can he removed from the bolt 6 and the bolt and casing 7 can then be re moved from the blind for repairs or for any purpose desired. The part 9 of the casing 7 has a tongue 15 thereon and the part 8 of said casing has a tongue 16 thereon, said tongues projecting laterally in opposite directions from the opposite sides of the casing 7.

A catch 17 is fastened to the window stool 18 by prongs 19, 19 in the usual manner, and this catch consists of a plate 20 with a hole 20 therein having a hook 21 upon its inner end which engages and projects over the tongue 15 when the blind is in its closed position, as illustrated in Fig. 2. When the blind is open, the tongue 16 is engaged by the hook 22 upon the catch 23. The catch 23 is formed with a toothed shank 24.- which projects into the wall of the house and has an ear 25 extending downwardly therefrom adapted to rest against the shingles or clapboards, and thus strengthen the same against the pressure brought to bear upon it when the blind is opened and the blind fast strikes the inclined plate 26. This inclined plate 26 has a hole 27 therein to re ceive the bolt 6 when the blind is opened and thus lock the blind in its open position.

The tongues 21 and 22 prevent the blind from being lifted off of its hinges when it is in an open or closed position, respectively, and thus when the blind is closed the fast acts as a burglar-proof fast to prevent the blind being opened from outside the house.

It is evident that this form of blind fast is equally well adapted to blinds which when hung and closed have the outer faces thereof flush with the outside of the house or with blinds which when hung and closed have the inner faces thereof flush with the outside of the house.

The device, as a whole, is very cheap to manufacture, being formed almost entirely of castings, and is very easily attached to the blinds and when so attached is very strong, durable and inconspicuous. It will also be noted that this construction of blind fast may be utilized with blinds which are single or which are double, that is, in which two blinds are hinged together and both are swung back against the house to engage a single blind catch on the house. In this case the edge of the casing containing the bolt will be placed in that portion of the blind which, when folded back on the other part to which it is hinged, comes outside of said other part, and one bolt will then fasten the two-part blind to the side of the house by engaging the catch 23.

Having thus described my invention, what I claim and desire by Letters Patent to secure is:

1. A blind fast consisting of a bolt, a cas ing in which said bolt is adapted to slide, said casing adapted to extend vertically into a blind from the lower end thereof, a catch adapted to be fastened to a window stool and consisting of a plate with a hole therein adapted to receive the lower end of said bolt, and means on said catch adapted to interengage with said casing laterally thereof, whereby said blind is prevented from being moved vertically thereof when in its closed position.

2. A blind fast consisting of a bolt, a casing in which said bolt is adapted to slide, said casing adapted to extend vertically into a blind from the lower end thereof, a tongue projecting laterally from said casin a catch adapted to be fastened to a win ow stool and consisting of a plate with a hole therein adapted to receive the lowerend of said bolt, and a hook on said catch adapted to engage and project over said tongue when said blind is in its closed position.

3. A blind fast consisting of a bolt, a casing in which said bolt is adapted to slide, said casing adapted to extend vertically into a blind from the lower end thereof, and a catch adapted to be fastened to the wall of a building and consisting of a plate with a hole therein adapted to receive the lower end of said bolt, and means on said catch adapted to interengage with said casing laterally thereof, whereby said blind is prevented from being moved laterally thereof when in its open position.

4. A blind fast consisting of a bolt, a casing in which said bolt is adapted to slide, said casing adapted to extend vertically into a blind from the lower end thereof, a tongue projecting laterally from said casing, and a catch adapted to be fastened to the wall of a building and consisting of a plate with a hole therein adapted to receive the lower end of said bolt, and a hook on said catch adapted to engage and project over said tongue when said blind is in its open position.

5. A blind fast consisting of a bolt, a casing in which said bolt is adapted to slide, said casing adapted to extend vertically into a blind from the lower end thereof, two tongues projecting laterally from opposite sides of said casing, a catch adapted to be fastened to a window stool and consisting of a plate with a hole therein adapted to receive the lower end of said bolt, a hook on said catch adapted to engage and project over one of said tongues when said blind is in its closed position, a catch adapted to be fastened to the wall of a building and consisting of a plate with a hole therein adapted to receive the lower end of said bolt, and a hook on said last-named catch adapted to engage and project over the other of said tongues when said blind is in its open position.

6. A blind fast consisting of a bolt, a casing in which said bolt is adapted to slide, said casing adapted to extend vertically into a blind from the lower end thereof, and a pin fast to said bolt and projecting laterally therefrom through a slot in said casing, said slot being of less width than the diameter of said pin for a portion of its length, said pin grooved to receive a vertical side of said slot.

7. In combination, a blind, a blind fast consisting of a bolt, a casing in which said bolt is adapted to slide, said casing extending vertically into said blind from the lower end thereof, a pin fast to said bolt and projecting laterally therefrom through a slot in said casing and a slot in said blind, the slot in said casing being of less width than the diameter of said pin for a portion of its length said pin grooved to receive a vertical side of the narrow portion of said slot, the upper end of said slot being as large as the diameter of said pin, the slot in said blind terminating at the upper end thereof beneath the upper end of the slot in said casing.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM H. SlVIFT.

Witnesses CHARLES S. GooDINe, ANNIE J. DAILEY. 

